CN202370447U - Sliding sleeve type ball-throwing multistage acidification process pipe column - Google Patents
Sliding sleeve type ball-throwing multistage acidification process pipe column Download PDFInfo
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- CN202370447U CN202370447U CN2011205116063U CN201120511606U CN202370447U CN 202370447 U CN202370447 U CN 202370447U CN 2011205116063 U CN2011205116063 U CN 2011205116063U CN 201120511606 U CN201120511606 U CN 201120511606U CN 202370447 U CN202370447 U CN 202370447U
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000008569 process Effects 0.000 title claims abstract description 28
- 230000020477 pH reduction Effects 0.000 title description 6
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims abstract description 11
- 239000012530 fluid Substances 0.000 claims description 18
- 239000010985 leather Substances 0.000 claims description 15
- 230000000295 complement effect Effects 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 11
- 238000010276 construction Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 3
- 230000011218 segmentation Effects 0.000 abstract 1
- 238000010008 shearing Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 13
- 239000002253 acid Substances 0.000 description 12
- 239000000243 solution Substances 0.000 description 12
- 238000013461 design Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000010306 acid treatment Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000003129 oil well Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The utility model provides a sliding sleeve type ball-throwing multistage acidizing process tubular column, which comprises an oil pipe, a sliding sleeve, a centralizer, a guider and a throwing ball, wherein the oil pipe is connected with the multistage sliding sleeve at intervals, the positions on the oil pipe, which are close to the sliding sleeves, are respectively sleeved with the centralizer, and the tail end of the oil pipe is connected with the guider; the sliding sleeve is composed of a sliding sleeve body and a sliding core, the sliding sleeve body is a hollow tubular column, a liquid outlet hole is formed in the side wall of the sliding sleeve body, the sliding core can be slidably arranged in the sliding sleeve body and fixedly connected with the side wall of the sliding sleeve body through a shearing pin and correspondingly seals the liquid outlet hole, and sealing rings are arranged at the connection parts of the outer peripheral surfaces of two ends of the sliding core and the inner peripheral wall of the sliding sleeve body; the inner diameter of the sliding core of the sliding sleeve close to the guider is smaller than that of the sliding core of the sliding sleeve far away from the guider; and each plugging ball is correspondingly matched with the sliding core of each stage of sliding sleeve respectively, and can sequentially seal each sliding core. The utility model discloses a segmentation acidizing technology has improved the acidizing effect of construction, and the messenger that can furthest is horizontal well section evenly receives the effect.
Description
Technical field
The utility model relates to a kind of acidification technique tubing string, especially a kind of sleeve type pitching stage acidizing process pipe string that is applicable to horizontal well.
Background technology
The horizontal well drilling cycle is long, and the mud dipping time is long, causes lose returns and mud contamination unavoidably.Conventional completion mode can't be implemented production capacity, must carry out effective modification measures.Especially for serious through the test reservoir damage, do not reach the horizontal well that the design production capacity can't be taked the pressure break measure again, taking the acidifying measure is to remove the effective technology that the near wellbore zone contamination and plugging improves oil well productivity.But horizontal well well segment length, the mean level segment length reaches hundreds of rice, have in addition reach several kms, common acidifying transformation can't reach full well section income.Its key issue is, how to adopt subsection acidizing technology to guarantee that acid solution plays one's part to the full and evenly gets into, and contaminated well section, thus reach the purpose of raising the output.
In the oil gas well of multilayer or thick-layer, because each interval permeability difference is bigger, need layering to carry out acidifying, to guarantee to press off the low interval of permeability.At present; The separate layer acid treatment technology of using has temporary transient plugging agent separate layer acid treatment, ball sealer separate layer acid treatment, packer acidifying etc., and preceding two kinds of methods are because technology itself has certain defective, and it is big to implement difficulty; Success rate is low; Commonly used is the packer acidifying, carry the packer acidization on the technology way that it adopts has and close a layer acidization, wherein:
The advantage of packer separate layer acid treatment is to select the acidifying scale according to the concrete condition of acidifying layer, but because the principle that replaces at present is an amount of few the replacement, and packer is prone to by the sand card in upper lifting pipe post middle and lower part, construction risk is bigger; Exactly a plurality of payzones are carried out acidifying simultaneously and close layer acidifying, reservoir properties is better, and each acidifying layer rerum natura difference is little; It is then higher to close layer acidizing treatment success rate; When the reservoir properties difference is bigger, when closing layer acidifying, the layer that imbibition ability is strong can be pressed off earlier; Yet, be difficult between levels linking up because the stress difference of oil reservoir deep interlayer and acidifying interlayer is bigger.
In addition, when horizontal well is carried out acidizing treatment, can not rely on gravity to arrive ball seat owing to be used for the steel ball of shutoff tubing string in the down-hole horizontal section, even arrive ball seat, sealing effectiveness is also very poor, thereby can not realize setting reliably, and then can influence acidizing effect.
Because the defective that above-mentioned known technology exists, the design people develops the sleeve type pitching stage acidizing process pipe string of the utility model according to the production design experiences of being engaged in this area and association area for many years.
The utility model content
The purpose of the utility model is to be to provide a kind of sleeve type pitching stage acidizing process pipe string; It adopts subsection acidizing technology, makes acid solution evenly get into contaminated well section, improves the acidizing treatment effect; Net horizontal section is evenly imitated, with further raising oil well productivity.
For this reason; The utility model proposes a kind of sleeve type pitching stage acidizing process pipe string, and it includes oil pipe, sliding sleeve, throwing stifled ball, centralizer and guider, and said oil pipe is connected with multistage said sliding sleeve at interval; And the position near each said sliding sleeve is arranged with said centralizer respectively on said oil pipe; The end of said oil pipe is connected with said guider, and wherein: said sliding sleeve is made up of a sliding sleeve body and a sliding core, and said sliding sleeve body is the tubing string of a hollow; Offer fluid hole on its sidewall; Said sliding core is slidable to place said sliding sleeve body, and it is through the sidewall Joint of a shear pin with said sliding sleeve body, and correspondingly seals said fluid hole; The outer peripheral face at said sliding core two ends and the joint of said sliding sleeve body internal perisporium are respectively arranged with sealing ring, and the sidewall of said sliding sleeve body and sliding core is equipped with a shear pin; Wherein, near the internal diameter of the sliding core of the said sliding sleeve of said guider, less than internal diameter away from the sliding core of the said sliding sleeve of said guider; A plurality ofly suppress the stifled ball of the said throwing that can cut off said shear pin through water filling, the stifled ball of each said throwing is distinguished corresponding coupling with the sliding core of said sliding sleeves at different levels, and can seal each relative said sliding core successively.
Aforesaid sleeve type pitching stage acidizing process pipe string; Wherein, The stifled ball of said throwing includes a tailstock, a target seeker and a seal; One end of said tailstock is connected with said target seeker, and the joint of the outer peripheral face of said tailstock and target seeker is provided with said seal, and the stifled ball of said throwing is complementary in the external diameter at said seal place and the internal diameter of said sliding core.
Aforesaid sleeve type pitching stage acidizing process pipe string, wherein, an end of said tailstock forms a threaded shank, and the end of said target seeker offers corresponding screw, and the threaded shank of said tailstock is bolted in the screw of said target seeker.
Aforesaid sleeve type pitching stage acidizing process pipe string; Wherein, The joint of the outer peripheral face of said tailstock and target seeker forms an annular breach; The cross section of said annular breach is an inverted T-shaped, and said seal is the sealing ring that is complementary with said annular breach, and it fixes in said annular breach.
Aforesaid sleeve type pitching stage acidizing process pipe string; Wherein, the stifled ball of said throwing further includes an empennage, and said empennage is made up of two leather cups and a connecting rod; Two said leather cups are nested with at interval on said connecting rod, and an end of said connecting rod is fixed in the other end of said tailstock.
Aforesaid sleeve type pitching stage acidizing process pipe string; Wherein, The two ends of said connecting rod have a fixed part respectively, and the shape of said fixed part periphery and the internal perisporium of said leather cup are complementary, and two said leather cup correspondences are set on the two said fixed parts; The other end of said tailstock offers connecting hole, and an end of said connecting rod is bolted in the connecting hole of said tailstock through said fixed part.
Aforesaid sleeve type pitching stage acidizing process pipe string, wherein, an end of said sliding sleeve body is provided with internal thread, and its other end then is formed with external screw thread.
Aforesaid sleeve type pitching stage acidizing process pipe string, wherein, said sliding sleeve body is along circumferentially being evenly equipped with a plurality of said fluid holes.
The multistage sleeve type pitching acidification technique tubing string that the utility model proposes to horizontal well acidizing treatment operation successively, promptly adopts the pointwise acidification technique processing piecemeal of approximate continuous oil pipe; Make acid solution evenly get into contaminated each well section; Guarantee that acid solution plays one's part to the full, improve the acidizing treatment effect, net horizontal section is evenly imitated; Thereby reach the purpose of raising the output, further improved oil well productivity.
The multistage sleeve type pitching acidification technique tubing string that the utility model proposes through the stifled ball of the throwing that the magnetic tape trailer wing is set, has changed the stuff of existing employing steel ball; It relies on waterpower to be delivered to the sliding core upper surface of sliding sleeve, realizes sealing, sets up certain pressure subsequently in the oil pipe; To cut off shear pin; Make sliding core descending, fluid hole leaks outside, and to corresponding interval acidizing treatment.Water attack has been avoided in this technology easy construction, has solved horizontal segment steel ball delivery difficulty, has set infirmative problem.
Description of drawings
Fig. 1 is the structural representation of the sliding sleeve of the utility model;
Fig. 2 is the structural representation of the stifled ball of throwing of the utility model;
Fig. 3 is the user mode sketch map of the utility model.
The critical element label declaration:
1 oil pipe, 2 sliding sleeves
21 sliding sleeve bodies, 22 sliding cores
23 fluid holes, 24 shear pins
25 sealing rings 3 are thrown stifled ball
31 tailstocks, 311 threaded shank
312 connecting holes, 32 target seekers
321 screws, 33 seals
34 annular breach 35 empennages
351 leather cups, 352 connecting rods
353 fixed parts, 4 centralizers
5 guiders, 6 screen casings
The specific embodiment
Understand for technical characterictic, purpose and effect to the utility model have more clearly, contrast the specific embodiment of description of drawings the utility model at present:
Fig. 1 is the structural representation of the sliding sleeve of the utility model; Fig. 2 is the structural representation of the stifled ball of throwing of the utility model; Fig. 3 is the user mode sketch map of the utility model.
As shown in the figure; The sleeve type pitching stage acidizing process pipe string of the utility model; Include oil pipe 1, sliding sleeve 2, throw stifled ball 3, centralizer 4 and guider 5, wherein, said oil pipe 1 is connected with multistage sliding sleeve 2 at interval; And the position near each said sliding sleeve 2 is arranged with said centralizer 4 respectively on said oil pipe 1, and the end of said oil pipe 1 is connected with said guider 5;
See also Fig. 1, said sliding sleeve 2 is made up of a sliding sleeve body 21 and a sliding core 22, and said sliding sleeve body 21 is the tubing string of a hollow; Offer fluid hole 23 on its sidewall, said sliding core 22 is slidable to place said sliding sleeve body 21, and it is through the sidewall Joint of a shear pin 24 with said sliding sleeve body 21; And the said fluid hole 23 of corresponding sealing, the outer peripheral face at said sliding core 22 two ends and the joint of said sliding sleeve body 21 internal perisporiums are respectively arranged with sealing ring 25, with the sealing between further raising sliding sleeve body 21 and the sliding core 22; And through shear pin 24 is set; Can avoid sliding core when going into the well, to be subjected to displacement, cause fluid hole to be connected, and then influence the construction effect of subsection acidizing with the inside of sliding sleeve body; Wherein, In above-mentioned sleeve type pitching stage acidizing process pipe string, near the internal diameter of the sliding core 22 of the said sliding sleeve 2 of said guider 5, less than internal diameter away from the sliding core 22 of the said sliding sleeve 2 of said guider 4.In addition, said sleeve type pitching stage acidizing process pipe string further includes the stifled ball 3 of a plurality of said throwings, and the stifled ball 3 of each said throwing is distinguished corresponding coupling with the sliding core 22 of said sliding sleeves 2 at different levels; And can seal each relative said sliding core 22, in real work, after the stifled ball sealing of throwing closes sliding core; Suppress through water filling; Can cut off the shear pin on the sliding core, so that sliding core moves down, liquid outlet leaks outside, and belongs to the acidizing treatment operation of interval subsequently.
Wherein, an end of said sliding sleeve body 21 is provided with internal thread, and its other end then is formed with external screw thread, is convenient to be connected with oil pipe.In addition, on the said sliding sleeve body 21 further along circumferentially being evenly equipped with a plurality of said fluid holes 23, so that acid solution can get into contaminated well section more uniformly; Further improved the acidizing treatment effect; Wherein, the concrete quantity of said fluid hole is decided according to the actual requirements, and does not do qualification at this.
Please in the lump referring to Fig. 2; One preferred embodiment is; The stifled ball 3 of said throwing includes a tailstock 31, a target seeker 32 and a seal 33; One end of said tailstock 31 is connected with said target seeker 32, and said tailstock 31 is provided with said seal 33 with the joint of the outer peripheral face of target seeker 32, and the stifled ball 3 of said throwing is complementary in the external diameter at said seal 33 places and the internal diameter of said sliding core 22.
Wherein, an end of said tailstock 31 forms a threaded shank 311, and the end of said target seeker 32 offers corresponding screw 321, and the threaded shank 311 of said tailstock 31 is bolted in the screw 321 of said target seeker 32.
Further; Said tailstock 31 forms an annular breach 34 with the joint of the outer peripheral face of target seeker 32, and the cross section of said annular breach 34 is an inverted T-shaped, that is to say; The cross section of this annular breach is stepped; Be convex shape, it includes peristome and holding part from outside to inside, and this holding part along this throw stifled ball journal to length greater than the length of this peristome; Said seal 33 is the sealing ring that is complementary with said annular breach 34, and it fixes in said annular breach 34.So, can more effective fit sealing spare, prevent that it from use taking place loosening and influence sealing effectiveness.
In addition; The stifled ball 3 of said throwing also further includes an empennage 35; Said empennage 35 is made up of two leather cups 351 and a connecting rod 352, and two said leather cups 351 are nested with on said connecting rod 352 at interval, and an end of said connecting rod 352 is fixed in the other end of said tailstock 31.Through throwing the empennage that the belt leather bowl is set on the stifled ball; The thrust that can bear current with bigger area on the one hand; The stifled ball of throwing can be moved in oil pipe more smoothly, and on the other hand, leather cup can also play the effect of setting upright; Prevent to throw stifled ball and setover, and then influence is to the sealing performance of sliding core because of unbalance stress.
Further; The two ends of said connecting rod 352 have a fixed part 353 respectively; The shape of said fixed part 353 peripheries and the internal perisporium of said leather cup 351 are complementary; Two said leather cup 351 correspondences are set on the two said fixed parts 353, and the other end of said tailstock 31 offers connecting hole 312, and the external thread bolt connection that the termination of an end of said connecting rod 352 through said fixed part 353 forms is in the connecting hole 312 of said tailstock 31.
The operating principle of the utility model is; A plurality of said sliding sleeves 2 are connected through oil pipe 1 successively at interval; And on oil pipe 1 near the position socket centralizer 4 of sliding sleeves 2 at different levels; End at oil pipe 1 connects guider 5, to form a sleeve type pitching stage acidizing process pipe string, realizes that oil well is carried out separate layer acid treatment to be handled.Wherein, centralizer 4 is the rigidity centralizer, and it can guarantee relative placed in the middle of oil pipe behind the well; Guider 5 heads adopt the spheroidal design, guarantee that oil pipe gets into net horizontal section smoothly; And, do not do concrete qualification for the quantity and the spacing distance of sliding sleeve 1, decide according to the well section situation of horizontal well, and make internal diameter, less than internal diameter away from the sliding core 22 of the sliding sleeve 2 of guider 5 near the sliding core 22 of the sliding sleeve 2 of guider 5.Therefore, as in structure shown in Figure 3, corresponding to the syllogic well section of required processing; At interval be provided with three grades of sliding sleeves, wherein, in the sliding sleeves at different levels sliding core latus rectum according to from top to bottom, descending principle is optimized design; The sliding in-core footpath that is first order sliding sleeve 2A, second level sliding sleeve 2B and third level sliding sleeve 2C reduces successively; In addition, the sliding core of corresponding above-mentioned sliding sleeves at different levels disposes the stifled ball of first, second and third throwing and (does not show among Fig. 3; Can be with reference to figure 2), it is complementary with the sliding core of above-mentioned first order sliding sleeve 2A, second level sliding sleeve 2B and third level sliding sleeve 2C respectively.
In actual use, the utility model is lowered in the screen casing 6 of horizontal well by the oil pipe connection, makes first, second and third well section I, II, III that first order sliding sleeve 2A, second level sliding sleeve 2B and third level sliding sleeve 2C lay respectively at needs processing; Throwing stifled ball with the 3rd inserts the oil pipe from the oil pipe mouth; And water filling in tubing string; Because the 3rd throws the internal diameter of the external diameter of stifled ball less than the sliding core place of first and second grade sliding sleeve, it can rely on waterpower to carry and move to third level sliding sleeve place, and the sliding core of corresponding sealing third level sliding sleeve; In oil pipe, continue water filling and suppress, when reaching certain pressure in the tubing string, promptly cut off the shear pin on the third level sliding sleeve; Make sliding core descending, fluid hole leaks outside, afterwards; In oil pipe, inject acid solution, can carry out acidizing treatment to Mitsui section III, wherein; Because the fluid hole on first, second grade sliding sleeve is in closed state, so acid solution can not leak outside from above-mentioned fluid hole, makes acid solution evenly get into contaminated Mitsui section; Guarantee that acid solution plays one's part to the full, improve the acidizing treatment effect of Mitsui section.
Afterwards, can drop into second, first successively and throw stifled ball, respectively the second well section and the first well section carried out the acidizing treatment operation, its practical implementation process and above-mentioned similar repeats no more at this.Thus; Can realize the operation of acidizing treatment successively, promptly adopt the pointwise acidification technique processing piecemeal of approximate continuous oil pipe, make acid solution evenly get into contaminated well section this horizontal well; Guarantee that acid solution plays one's part to the full; Can improve the acidizing treatment effect, net horizontal section is evenly imitated, thereby reach the purpose of raising the output.In addition, before the injection acid solution is constructed, can also carry out technology for washing well, further enlarge the range of application of the utility model.
In addition, from the above, in actual use; Throw stifled ball through being provided with, changed the stuff of existing employing steel ball, it relies on waterpower to be delivered to the sliding core place of sliding sleeve; And the sealed sliding core, through in oil pipe, setting up certain pressure, can cut off shear pin subsequently; Make sliding core descending, fluid hole leaks outside, and can carry out acidizing treatment to the well section.This throws stifled ball easy construction, has avoided water attack, has solved horizontal segment steel ball delivery difficulty, has set infirmative problem.
It is pointed out that in actual job, for above-mentioned third level sliding sleeve; The sliding sleeve that promptly terminal well section is carried out the acidizing treatment operation also can not installed sliding core, and its fluid hole directly is communicated with the inside of sliding sleeve body; So, after the utility model is inserted horizontal well, can directly carry out acidifying to terminal well section; Operation such as suppress and omit the stifled ball of the throwing put into the magnetic tape trailer wing and water filling, can further improve the operating efficiency of acidizing treatment operation, reduced operating cost again.
The above is merely the schematic specific embodiment of the utility model, is not in order to limit the scope of the utility model.Any those skilled in the art, equivalent variations of under the prerequisite of design that does not break away from the utility model and principle, having done and modification all should belong to the scope that the utility model is protected.
Claims (8)
1. sleeve type pitching stage acidizing process pipe string; It is characterized in that; Said sleeve type pitching stage acidizing process pipe string includes oil pipe, sliding sleeve, throwing stifled ball, centralizer and guider, and said oil pipe is connected with multistage said sliding sleeve at interval, and the position near each said sliding sleeve is arranged with said centralizer respectively on said oil pipe; The end of said oil pipe is connected with said guider, wherein:
Said sliding sleeve is made up of a sliding sleeve body and a sliding core; Said sliding sleeve body is the tubing string of a hollow; Offer fluid hole on its sidewall, said sliding core is slidable to place said sliding sleeve body, and it is through the sidewall Joint of a shear pin and said sliding sleeve body; And the said fluid hole of corresponding sealing, the outer peripheral face at said sliding core two ends and the joint of said sliding sleeve body internal perisporium are respectively arranged with sealing ring;
Wherein, near the internal diameter of the sliding core of the said sliding sleeve of said guider, less than internal diameter away from the sliding core of the said sliding sleeve of said guider;
A plurality ofly suppress the stifled ball of the said throwing that can cut off said shear pin through water filling, the stifled ball of each said throwing is distinguished corresponding coupling with the sliding core of said sliding sleeves at different levels, and can seal each relative said sliding core successively.
2. sleeve type pitching stage acidizing process pipe string as claimed in claim 1; It is characterized in that; The stifled ball of said throwing includes a tailstock, a target seeker and a seal; One end of said tailstock is connected with said target seeker, and the joint of the outer peripheral face of said tailstock and target seeker is provided with said seal, and the stifled ball of said throwing is complementary in the external diameter at said seal place and the internal diameter of said sliding core.
3. sleeve type pitching stage acidizing process pipe string as claimed in claim 2; It is characterized in that; One end of said tailstock forms a threaded shank, and the end of said target seeker offers corresponding screw, and the threaded shank of said tailstock is bolted in the screw of said target seeker.
4. sleeve type pitching stage acidizing process pipe string as claimed in claim 3; It is characterized in that; The joint of the outer peripheral face of said tailstock and target seeker forms an annular breach; The cross section of said annular breach is an inverted T-shaped, and said seal is the sealing ring that is complementary with said annular breach, and it fixes in said annular breach.
5. like each described sleeve type pitching stage acidizing process pipe string of claim 2 to 4; It is characterized in that; The stifled ball of said throwing further includes an empennage; Said empennage is made up of two leather cups and a connecting rod, and two said leather cups are nested with at interval on said connecting rod, and an end of said connecting rod is fixed in the other end of said tailstock.
6. sleeve type pitching stage acidizing process pipe string as claimed in claim 5; It is characterized in that; The two ends of said connecting rod have a fixed part respectively, and the shape of said fixed part periphery and the internal perisporium of said leather cup are complementary, and two said leather cup correspondences are set on the two said fixed parts; The other end of said tailstock offers connecting hole, and an end of said connecting rod is bolted in the connecting hole of said tailstock through said fixed part.
7. sleeve type pitching stage acidizing process pipe string as claimed in claim 1 is characterized in that an end of said sliding sleeve body is provided with internal thread, and its other end then is formed with external screw thread.
8. like claim 1 or 7 described sleeve type pitching stage acidizing process pipe strings, it is characterized in that said sliding sleeve body is along circumferentially being evenly equipped with a plurality of said fluid holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205116063U CN202370447U (en) | 2011-12-09 | 2011-12-09 | Sliding sleeve type ball-throwing multistage acidification process pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205116063U CN202370447U (en) | 2011-12-09 | 2011-12-09 | Sliding sleeve type ball-throwing multistage acidification process pipe column |
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| Publication Number | Publication Date |
|---|---|
| CN202370447U true CN202370447U (en) | 2012-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205116063U Expired - Fee Related CN202370447U (en) | 2011-12-09 | 2011-12-09 | Sliding sleeve type ball-throwing multistage acidification process pipe column |
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| CN (1) | CN202370447U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043237A (en) * | 2019-05-31 | 2019-07-23 | 铁岭曲氏石油技术开发服务有限公司 | Plug-injection type sand blower of sliding sleeve and its control method |
| CN110080741A (en) * | 2019-05-24 | 2019-08-02 | 盐城市弘通石油机械有限公司 | It is a kind of efficiently easily to open sand blower of sliding sleeve |
| CN110529091A (en) * | 2019-08-21 | 2019-12-03 | 中国石油天然气股份有限公司 | Horizontal well fixed-point acidizing method and application |
| CN113944439A (en) * | 2020-07-15 | 2022-01-18 | 四川维泰科创石油设备制造有限公司 | Plugging body, underground plugging system and plugging method |
| CN115247544A (en) * | 2022-08-01 | 2022-10-28 | 中国石油化工股份有限公司 | Horizontal well sectional profile control tubular column system and sectional plugging assembly thereof |
-
2011
- 2011-12-09 CN CN2011205116063U patent/CN202370447U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080741A (en) * | 2019-05-24 | 2019-08-02 | 盐城市弘通石油机械有限公司 | It is a kind of efficiently easily to open sand blower of sliding sleeve |
| CN110043237A (en) * | 2019-05-31 | 2019-07-23 | 铁岭曲氏石油技术开发服务有限公司 | Plug-injection type sand blower of sliding sleeve and its control method |
| CN110043237B (en) * | 2019-05-31 | 2023-12-22 | 铁岭曲氏石油技术开发服务有限公司 | Plug-in type sliding sleeve sand blaster and control method thereof |
| CN110529091A (en) * | 2019-08-21 | 2019-12-03 | 中国石油天然气股份有限公司 | Horizontal well fixed-point acidizing method and application |
| CN113944439A (en) * | 2020-07-15 | 2022-01-18 | 四川维泰科创石油设备制造有限公司 | Plugging body, underground plugging system and plugging method |
| CN115247544A (en) * | 2022-08-01 | 2022-10-28 | 中国石油化工股份有限公司 | Horizontal well sectional profile control tubular column system and sectional plugging assembly thereof |
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